I am looking at diamond pairs for studs. I see that one site has created many pairs that contain a J and an I, or and I and an H. Are the colors so close that it would not be noticeable if you held the pair of studs in your hand? If so is there any reason at all to buy a pair of I rather than J? Is there any real variation to be expected in, for example different pairs that are all rated the same for color (other factors kept constant). Assume Ideal cut throughout. I am leaning toward J but have never seen a J in real life -- only at this site --and I am very grateful to the posters who shared photos of their J studs. They look beautiful and I am just about convinced.